VC4000 Manual
83
8. SENSOR INPUT
This section explains the hardware associated
with each sensor input.
Sensor inputs list
OBDII sensors (PC)
o
27 EPA mandated sensors on USA
spec vehicles
o
Connect using VSI interface
1 Analog output port
o
Output various sensors (see list)
o
Connect to other data acquisition
systems
GPS Sensors (PC)
o
Store position at beginning and end of
test
o
Store GPS speed every 5Hz
External Activation
o
Only activates the start of the test
o
5
– 36VDC
To calculate the total storage time when extra sensors are used, use
the formula:
rate
sample
sensors
of
)
3
(#
2096400
Example
: 100Hz sample rate, 3 extra sensors turned on:
seconds
3494
600
2096400
100
)
3
3
(
2096400
When using GPS sensors, speed counts as 1 sensor, location
counts as 4 sensors, and altitude counts as 1 sensor.
Since there is only one RS232 port on the VC4000PC either the
GPS or VSI can be connected, not both at the same time. If you
require both you can have your VC4000PC upgraded to a
VC4000DAQ which has 3 RS232 ports.
